2008/02/29 by Mihoko M. Nojiri, Mihoko M Nojiri, Michihisa Takeuchi · 3 citations
Physics and Astronomy · #Collider #Hadron #Higgs boson #High-Energy Particle Collisions Research #Jet (fluid) #Large Hadron Collider #Particle Detector Development and Performance #Particle physics theoretical and experimental studies #Polarization (electrochemistry) #Quark #Top quark #hep-ph
paper · pdf · doi:10.1088/1126-6708/2008/10/025
published as JHEP0810:025,2008 · 33 pages, 12 figures, background analyses are added and some parts are revised
arxiv created 2008/09/08 · openalex publication_date 2008/10/07 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
In the Littlest Higgs model with T-parity (LHT), top-partners (T-) are produced in pairs at the Large Hadron Collider (LHC). Each top-partner decays into a top quark (t) and the lightest T-odd gauge partner AH. We demonstrate reconstruction of the ttbar system decaying hadronically, and measurement of the top-partner mass from the mT2 distribution. A top quark from a T- decay is polarized, and we discuss the effect of this polarization on the decay distributions. Because the events consist of highly collinear jets which occasionally overlap each other, we compare distributions using different jet reconstruction algorithms (Snowmass cone, kt, Cambridge, SISCone). We find clustering algorithms are advantageous for studying top polarization effects.